About Jitsi Meet:
Per Wikipedia, Jitsi is a free, open-source multiplatform voice (VoIP), video conferencing and instant messaging applications for the web platform, Windows, Linux, macOS, iOS and Android. With the growth of WebRTC, the project team focus shifted to the Jitsi Videobridge for allowing web-based multi-party video calling. Soon, they added Jitsi Meet, a full video conferencing application that includes web, Android, and iOS clients.
Jitsi offers a free service on the Web, Android and iOS. You can host Jitsi on your own servers, allowing for secure, private, and low-cost video conferencing for teams and business.